The question of who is watching the watchers is not simply about asking whether governments should surveil citizens or not, but also wondering when government secret-keeping crosses the line from democracy to dictatorship.

In our post-script, we reveal "the ultimate secret".

Empire can be seen from the last Sunday of every month at 2000GMT, and is re-aired during the following week at these times GMT: Monday: 1200GMT; Tuesday: 0100GMT; Wednesday: 0600GMT.

Click here for more Empire.

Source: Al Jazeera